Question: A production process is sampled 24 times with a sample size of 6 yields an overall mean of 22.3 and an average range of 0.7.

A production process is sampled 24 times with a sample size of 6 yields an overall mean of 22.3 and an average range of 0.7. Determine the lower control limit (LCL) for the x-bar chart.

19.8619 21.9619 25.9619 29.9619

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